The length of the arms decreased in hominin species over time because __________.
A) shorter arms improve balance
B) shorter arms increased tool-making ability
C) the arms were no longer weight bearing
D) the arms were used for carrying items

Question

Quizplus · Accepted Answer

As hominins evolved to walk upright, their arms were no longer needed for weight-bearing activities like climbing, leading to a decrease in arm length over time.

The Length of the Arms Decreased in Hominin Species Over